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WALL-MOUNTED ULTRASONIC FLOW METER
Features
- Accuracy better than ±1%
- Pipe size coverage from DN15 to DN6000 mm using selectable transducer models
- High reliability through low voltage, multi-pulse radiating circuit design
- High anti-interference performance using double balanced signal differential transmission and receiving circuitry, rejecting drive, tower, and strong power line interference
- Automatic memory of cumulative flow for 512 days, 128 months, and 10 years
- Automatic memory of power-on and power-off events up to 64 times with associated flow data
- Automatic memory of meter working condition for the previous 32 days
- Temperature sensor support for heat flow measurement
- SD card data storage option for mass data logging and software analysis
Non-Invasive Flow and Heat Measurement for a Wide Range of Liquid Applications
The BWB Instruments Wall-Mounted Ultrasonic Flow Meter provides accurate, non-invasive volumetric flow measurement for a wide range of liquids across industrial, utility, and energy applications. The transmitter and transducer install separately, with the transmitter mountable on a wall, instrument cabinet, or dashboard, and the transducer clamped or inserted directly onto the pipe without cutting or draining the line.
Compatible with an optional temperature sensor for heat flow measurement, the meter is suitable for production monitoring, water balance testing, thermal equilibrium network commissioning, and energy monitoring across running water, heating, water conservation, metallurgy, chemical, machinery, and energy applications.
Available in three sensor configurations — clamp-on, insertion, and pipeline type — to suit different pipe materials, sizes, and installation conditions.
Benefits
- Non-invasive clamp-on installation requires no pipe cutting, no process shutdown, and no pressure loss, making it ideal for retrofits and temporary measurement
- Extremely wide pipe size range from DN15 to DN6000 mm using selectable transducer models, covering small instrumentation lines through to large distribution mains
- Heat flow measurement capability when paired with optional PT100 temperature sensors, suitable for thermal energy monitoring and HVAC applications
- Long-term data logging with automatic storage of cumulative flow history, power events, and meter status, supporting process auditing and energy reporting
- Explosion-proof transmitter option available for hazardous area installation
- RS485 and MODBUS interface for direct integration with SCADA, DCS, and building management systems
- SD card data storage option enables independent data logging and offline analysis without connection to a control system
| Parameter | Details |
|---|---|
| Measurement Principle | Ultrasonic transit-time, four-byte IEEE754 floating-point arithmetic |
| Accuracy | Better than ±1% |
| Display | LCD with English display |
| Analog Output | One 4–20 mA current output, impedance 0–1 kΩ, accuracy 0.1% |
| Pulse Output | One OCT pulse output, width 6–1000 ms, default 200 ms |
| Relay Output | One relay output |
| Analog Input | Three 4–20 mA current inputs, accuracy 0.1%, for temperature, pressure, and level signals |
| PT100 Input | Connects to three-wire PT100 resistance sensor for heat flow measurement |
| Data Interface | Isolated RS485, MODBUS compatible, PC-upgradeable firmware |
| Cable Length | Normal below 50 m; RS485 communication up to several thousand metres |
| Pipe Material | Steel, Stainless Steel, Cast Iron, Copper, PVC, Aluminium, FRP (liner allowed) |
| Pipe Diameter | DN15 to DN6000 mm |
| Installation | Upstream 10D, downstream 5D; 30D from pump outlet |
| Fluid Types | Water, Sea Water, Acid Liquids, Beer, Alcohol, Oil, and any liquid that can propagate ultrasonic signal |
| Fluid Temperature | -30 to +160°C |
| Fluid Turbidity | Up to 10,000 ppm with little bubbles |
| Flow Velocity | 0 to ±10 m/s |
| Transmitter Operating Temperature | -20 to +60°C |
| Transducer Operating Temperature | -30 to +160°C |
| Transmitter Humidity | Up to 85% RH; IP68 protection; water depth <2 m |
| Power Supply | DC 8–36 V or AC 85–264 V |
| Power Consumption | 1.5 W |
Get the Right Meter for Your Application.
Get in touch with our team to discuss the right flow measurement solution for your process requirements.